21612975

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{523}}^1$

素因数の和:584

約数の個数: 48

約数和(自身を含む): 38985600

約数和(自身を除く): 17372625

約数列:

[1, 3, 5, 15, 19, 25, 29, 57, 75, 87, 95, 145, 285, 435, 475, 523, 551, 725, 1425, 1569, 1653, 2175, 2615, 2755, 7845, 8265, 9937, 13075, 13775, 15167, 29811, 39225, 41325, 45501, 49685, 75835, 149055, 227505, 248425, 288173, 379175, 745275, 864519, 1137525, 1440865, 4322595, 7204325, 21612975]

約数ペア:

[(1, 21612975), (3, 7204325), (5, 4322595), (15, 1440865), (19, 1137525), (25, 864519), (29, 745275), (57, 379175), (75, 288173), (87, 248425), (95, 227505), (145, 149055), (285, 75835), (435, 49685), (475, 45501), (523, 41325), (551, 39225), (725, 29811), (1425, 15167), (1569, 13775), (1653, 13075), (2175, 9937), (2615, 8265), (2755, 7845)]